The given line graph depicts how many patients pay visits to a hospital on a weekly basis, categorized into four distinct departments, between 2000 and 2012.
Overall, all departments exhibited a general increase in their number of weekly patients despite varied growth rate. Notably, dental department consistently recorded the highest number weekly patients throughout the entire timeframe.
In detail, the number of patients visiting dental section once a week started at 200 people in 2000, after which it underwent a marked rise to reach 300 patients in 2004 and levelled off at this figure until 2008. This was followed by a dramatic increase to 400 patients, doubling the original figure by the end of the period and making this the most common department among the four examined categories. Meanwhile, visions displayed a sharper increasing pattern during the first four years, from around 120 patients to 250 patients, before gradually going up to reach 300 patients by 2012.
In contrast, infertility showed a more fluctuating trend, starting at 150 weekly patients in 2000, with a subsequent slight increase to nearly 175 patients in 2004. After that, this figure climbed steadily to 250 patients in the next four years and started to decline to stand at 200 patients in 2012. Diabetes, on the other hand, commenced modestly at around 100 patients per week, before seeing a moderate increase to 150 patients and staying at this rate until 2008. The last four years observed a considerable rise in this figure, enabling diabetes to overtake infertility and become the third popular department.